Anchor for sand cores.



` PATENTBD PEB. 1o, 1903.' J. G. BMRIGH. w1111011011 P011 SAND comas. APPLICATION FILED FBB. 24, 1902.

H0 MODEL.

4. /NVE/vrQ/ C @r l -`Arm/111mm UNITED STATES PATENT OFFICE.

JOIIN GEORGE EMRIOH, OF COLUMBUS, OHIO.

ANCHOR FOR SAND comas.

SPECIFICATION forming part of'Letters Patent No. 720,011, dated February 10, 1903. Application led February 24, 1902. Serial No. 95,334. (No model.)

To ol/ZZ whom t may concern:

Be it known that I, JOHN GEORGE EMEIOH, a citizen of the United States, residing at Columbus, in the county of Franklin and State of Ohio, have invented certain new and useful Improvements in Anchors for Sand Cores; and I do hereby declare the following to be a full, clear, and exact description of the inven- V tion, such as will enable others skilled in the art to which it appertains to make and use the same. Y

The bottoms of the bases of heating-stoves have heretofore been bolted on and the joints between the parts filled with putty; but after a short time the putty dries, cracks, and falls out, letting in air to the ash-pit and permitting ashes therein,A to fall through. Many attempts have been made to east a stove-base, including its bottom, in one piece; but, so far as I am aware, such attemptshave invariably resulted in failure, This failure has been due, I think,to the peculiar construction of a stovebase,particularly its extension in a horizontal direction from a common vertical axis,

a plan view of the anchor and its supportingbar. Fig. 2 shows the position of the anchor in a flask containing the patterns for a hollow casting. the severable wings. Fig. 4. is a sectional view of such wing, taken on line fr so, Fig. 3.

In the views, l designates the center post or stem of the anchor.

2 is the head or crown-piece,which is shown to be removably attached to the upper end of the stem I by means of a pin 6, passed through a loop 6a, extending upward from the top of the center post. The crown-piece has reaching outward from it any suitable number of wings, the body portions of which are substantially fiat, lying in planes substantially coinciding with the axis of the center post. Some of the Fig. 3 is a side view of one of Wings 3, preferably the shorter, can be integral with the crown-piece, while others, 4, are separable. The wings 8 in the form of the anchor shown are shorter, because of the substantially square form of the stove-base pattern, the s hort wings reaching to the side portions and the long wings reaching toward the corners. The detachable or separable Wings are fastened to the crown-piece by means of a pin 5, passed through a tongue or tenon on the shank of the wing, said tongue engaging a hole in the crown-piece 2. The Wings are shown to project downward with respect to the upper end of the crown-piece and to have their upper edges made with rather wide laterally-projecting ribs or flanges 3d and 4d, so thatthe Wing with said flange is substantially T shape in cross-section. The

Aremaining or the greater portion of the remaining edges of the wings are shown to be provided with lateral ribs 4b, and a hole 4C is made in the body of the wing. The sand is tamped into and around said hole and all the ribs to aid in holdingthe Whole body of the sand core intact. The ribs/ld are shown to be enlarged toward their roots or shanks Where they join the crown-piece, and such ribs are especially useful in bracing the core against lifting, because when the metal is poured into the mold, as hereinafter described, it fills the lower part of the mold first and there, especially if the sand be a trilie moist, generates steam and gas, the tendency of which is to lift or bulge the core upward and close the molding-spaces above, and particularly at the center, if the core be Wide.

Now these Wide flanges 4d, as will be seen from an inspection of Fig. I, afford in the aggregate, aud especially around the center, near the crown-piece, a large area of such bracingsurface by which the uplifting of the core is prevented.

In making a mold with my anchor I employ a supporting-bar I3, which is to be keyed IOO the anchor as used in forming the mold for a hollow stove-base. In this View, 7 denotes the drag, and 8 the cope. Ordinary clamps 14 are employed for securing the drag and cope toget-her. 9 denotes the pattern for the top of the stove-base, and 10 and 11 a ring and plate, respectively, constituting together the pattern for the bottom of the stove. The sand in this view, Fig. 2, is shown to be all tamped and the parts of the flask ready for separation preparatory to drawing the several pieces of the pattern. The lines drawn through the sand indicate parting-lines. When parts are made ready, as shown in Fig. 2, the {iask' is first rolled over from its position indicated in that view, and after removing the clamps 14 and taking out pin 1c the drag is removed, leaving the pattern 9 exposed to be drawn. The drag is then replaced on the cope and the two clamped together, the pin 1c also being inserted. The flask is then rolled over again to the position seen in Fig. 2 and the cope with its sand removed= leaving the pattern 10 and 1l exposed to be drawn, after which the cope is replaced and clamped to the drag. The flask is now ready for the pouring. Suitable gates, as indicated by dotted lines in the upper portion of Fig. 2, are of course provided through which the metal is poured. When the casting has cooled off, the anchor can be removed from the interior of the casting through the hole in the top by pulling out the pins 5, connecting the larger Wings 4 with the crown, and the pin 6, connecting the crown with the stem.

What I claim, and desire to secure by Letters Patent, is-

1. 'An anchor for sand cores comprising a center post, a crown-piece thereon, and dat separable Wings'attached to saidcroWn-piece and radiating therefrom in planes coinciding with the longitudinal axisof the post.

2. An anchor for sand cores comprising a center post, a removable crown-piece thereon and flat separable wings attached to said post.

crown-piece and radiating therefrom in planes coinciding with the axis of said post.

3. An anchor for sand cores comprising a center post, a removable crown-piece thereon and dat separable Wings attached to said crown-piece and radiating therefrom in planes coinciding with the axis of said post, said crown-piece also having fixed wings radiating therefrom in planes coinciding with theaxis of the post.

4. An anchor for sand cores comprising a center post, a removable crown-piece having fixed radiating Wings, and also Wings separable therefrom radiating in planes coinciding with the axis of the center post.

5. An anchor for sand cores comprising a center post, a crown-piece thereon and flat separable Wings radiating from said crownpiece in planes coinciding With the axis of said center post and provided with openings and laterally-extending ribs.

6. An anchor for sand cores comprising a center post having a shoulder at one end and a crown-piece at the other and fiat separable wings radiating from said crownpiece in planes coinciding With the axis of the center 7. An anchor for sand cores comprising a center post having a shoulder at one end, and acroWn-piece at the other and separable Wings of T shape in vertical cross-section radiating from said crown-piece.

8. An anchor for sand cores comprising a center post having a shoulder at one end, and a crown-piece at the other, and dat separable Wings radiating from said crown-piece, said Wings having edge danges 4d enlarged near their inner ends.

In testimony whereof I affix my signature in presence of two Witnesses.

JOHN GEORGE EMRICH.

Witnesses:

BENJ. FINCKEL, GEO. M. FINCKEL. 

